Which of the following is true about the internal combustion engine (heat engine) in your car?...
Which of the following is true about the internal combustion engine (heat engine) in your car? Question 2 options: a) It is not very efficient and it does not conserve energy. b) It is not very efficient but it conserves energy. c) It is very efficient, but does not conserve energy. d) It completely converts heat energy from the gasoline it burns into kinetic energy with no waste heat.
Homework Answers
Option b.
It is not very efficient because some of its energy released in the form of heat.
Energy remains conserved because first law of thermodynamics.
Thats the law which states that energy can neither be created nor be destroyed but cab be transformed from one form to another...
Ic engines are not very efficient because it involves high temperature operation and most of the useful heat is carried by the water jackets...
Option B
Add Answer to:
Which of the following is true about the internal combustion
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15. When gasoline burns in a car engine, the heat released causes the products CO2 and H20 to expand, which pushes the pistons outward. Excess heat is removed by the car's radiator. If the expanding gases do 478.9 J of work on the pistons and the system releases 846.8 J to the surroundings as heat, calculate the change in energy (AE) in J, KJ, and kcal. (4.0 pts) Energy change Your solutions (AE-+ w) (1 cal = 4.184 J, 1...
Six new prototypes for internal-combustion engines are tested in the laboratory. For each engine, the heat energy input and output per cycle, and the designed number of cycles per second are measured. Rank these engines on the basis of the work they perform per cycle. Rank from largest to smallest. To rank items as equivalent, overlap them.
Question 5: Answer the following questions regarding heat or work. Explain your answer for full credit (4 points). A. A container has a certain amount of hydrogen. The container is compressed. Should work be positive or negative if we consider hydrogen our system? B. Dr. Burns' brother Nolan makes a snowball in his hand. Heat from his hand melts the snowball. Should "q" be positive or negative if the snowball is our system? C. Metallic zinc is dropped in a...
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Caculate the PH THANK YOU!
[OH−] = 1.9×10−7 M
[OH−] = 1.6×10−8 M
[OH−] = 7.2×10−11...
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